Typewriter platen



May 2? l J. C. HENDRCKSSN TYPEWRITER PLATEN Filed July 19 1925 ttozum Patented Marg?, i924.

JHN C. HENDRICKSON, 0F LBROKLYN NEW 'Y0'RK.

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Application fue@ Jiiiy ie,

To Hicham t may concern:

Be it known that' I, JOHN C. Hnnnnicn son, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain. new and useful Improvements in Typewriter Platens; and l do hereby declare the following to be a full, clear, and exact description of the invention, suoli as will enable others skilled in the art to which it appertains to make and use lthe same. i

The principal object of the present invention is the provision of a platen for type-- writing machinesl which will insure clear impressions, reduce the noise incident to the impact of the type 'therewith to the smallest amount possible to cushion the blow result-l ing from `the type striking the platen, tomaterially reduce the weight and liiially to produce aresilient platen which absorbs shock and enables the operator to `increase speed.

Other objects and advantages will be ap'- parent and suggest themselves as the nature of the invention is understood.

' liVliile the drawings illustrate'an embodiment-o the inventionit is to be'unde'rs'tood that in adapting the saine to meet different conditions and requirements, various changes in the forni, proportion'and minor details of construction may be resorted to without departing from the nature of the invention.

Referring to the accompanying drawings forininga part f the application:

Figure l is a front View of a typewriter platen embodying theV invention, parts bev ing broken away,

y Figure 2 is a transverse section on the line 2-2 of Figure 1,

' ton core.

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t Figure 3 is a transverse section on the lineB-B of Figure 1, and A Figure 4 is a perspective ViewV ot the skele- Corresponding and like parts are referred to in the following description und designated in the several views of the drawings by like reference characters.

-Tlie platen comprises a skeleton core and Va plurality of enveloping layers of different materials which combine to producen platen which is both light, resilient and noise-deadening. The skeleton core Acomprisesa plurality of bars -l grouped about anaxis and connected by ends 2 and an intermediate strut .3,.the severalparts being'preierably of integral formation. The core, while referablycast ofl aluminum, may consist o any ma-4 4reducing material., I

ieee. semi no. 652,595.-

terial and constructed in any preferred Way lt is observed that the platen may be adap to any -makel oi' machine by fitting suitableW in and assist materially in holding the sleeve in the required adjusted position. The sleeve 'functions as a cushion, -is light and tends to absorb type bar noise and to lessen the jar incident to the impact' ofthe type bar with the platen. `Whiie it is preferred to employ .a cork sleeve 5, it is to be understood. that said sleeve may be of any light resilient inaterial. "i

A. sleeve 6, preferably of sott rubber, is stretched over the cushionin sleeve 5 and further assists in deadening t e noise resulting from the type striking the platen. The sleeve 6 may consist `of :telt or other noise A metal sleeve 7. of aluminum or zinc envelops the sleeve 6 and provides a solid :teun-- dation for the outer sleeve or covering to insure clear impressions land alsornaintain the outersleeve `or cover in propershape', and4 furthermoreenables-the outer cover or sleeve to be readily replaced when Worn A sleeve or cover'S is itted upon the metal sl eve 7 and may be held in pla-ce by a suitable. dhe` sive. and being backed by the metal sleeve maintains its shape and insures a clearimpression and moreover may be ,readilyl rep aced when Worn at' a comparatively iiiiiallV cost. i

What is claimed is: 'l

l. A platen having 'a skeleton .core",:nro-l vided with ends, hspace-d longitudinaly ars extending from one of said ends to the other of said ends, a strut for said bars internie-idiete said ends marginally terminating `inwardly of the outer surfaces ofthe bars, and a cushioned covering on fthe'core. V

2. A platen having av core, a sleevesurrounding the saine of substantially rigid inaterial, said sleeve ,beinir interior-1y and ex- ,teriorly lined .with rub er, and a resilient sleeve interposed between the core and inner i imV to theother of said ends, a strut for said bars intermediate said ends and spurs integral with the Gore, and a cushioned covering on. theeore penetrated by and retained in place by said spurs.

4. A platen having a' skeleton core provided with ends, spaced substantially longitudinal bars extending from one of said ends tothe other of said ends and integral there- `with, a strut integral With said hars interme- .diate said ends marginally terminating 111-,v

Wardly of the outer surfaces of said bars, spurs integral with ,said bars, and a cushioned covering on the core penetrated and held in place by said spurs.

5. A core for a platen or the like having ends, substantially longitudinal bars extending from one of said ends to the other of said ends and being spaced apart and integral with said ends, a strut integral with said bars disposed intermediate said ends and marginally terminating inwardly of the outer surfaces of the bars, and cushion-securintl:r 4spurs integral with the bars an'd eX- tendingoutwardly therefrom.

ln testimony' whereof I atix my signature in presence of two witnesses.

JOHN C. HENDRICKSON. Witnesses THERESIA HENDRICKSON, LOUISE MULLER. 

